Help With WandMara Build Please.

I was watching Build of the week earlier and i saw the BM wand mara, and he looked really fun so i tried to make a BM Irongrip wander.
Feedback would be great and any ideas to streamline it.
The idea is to make a tanky wand mara who uses some skill (frenzy, power siphon. But im open to ideas) and to decent damage.

Hmmm like i said, i'm not the best at this :D. looking at those suggestions i could get rid of those passives and reach the elder power in the same skill points, i thank you for pointing that out, any other ideas would be great.
new build btw
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